What is there inside and MCCB?
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Difference between MCCB and RCCB
Difference between MCCB and RCCB MCCBs and RCCBs are circuit protection devices with two different application. When the former protect against overload and short circuit, the later protects against Residual…
Difference between MCB and MCCB
MCBs and MCCBs have commonly used circuit protection devices. These devices provide protection against overcurrent and short circuits. There are a few difference between MCB and MCCB. Overview of MCB:…
Difference between contactor and relay
Contactors and relays are two closely related terms leading to confusions and misinterpretations most of the times. Both of them are electrically operated switches used for control and switching of…
What is ammeter selector switch?
Ammeter selector switch is basically a normal three position switch. In large Electrical distribution panels, an ammeter is used to monitor the current through each line. (more…)
Why are current transformers used in power system?
Why are current transformers used in power system? Protective relays coils and measuring instruments such as an ammeter, watt meter and energy meter are very sensitive devices and cannot be…
What are the basic requirements of a protection system used in a power network or equipment?
The following are the basic requirements of any power system protection system: ReliabilitySimplicitySelectivitySensitivitySpeed of operationEconomy Circuit breaker
What are the essential components of a protective relay?
What are the essential components of a protective relay? The essential components of a protective relay are the following: 1. Sensing element. 2. Comparison element. 3. Control element Related…
